Synonyms|949Antonyms|256|Broader|10Narrower|11Related|1.1k

115 entries under significant topic. ×

2
influential(adjective, important, powerful, definite)
2
mandatory(adjective, set, essential, basic)
2
material(big, important, substantial, valuable)
2
obligatory(adjective, essential, basic, vital)
2
required(adjective, important, essential, critical)
2
urgent(adjective, severe, big, important)
1
acute(adjective, severe, important, serious)
1
all-important(adjective, serious, essential, basic)
1
big(important, substantial, valuable, vital)
1
big-league(great, extraordinary, outstanding, vital)
1
bottom-line(adjective, important, essential, critical)
1
cardinal(adjective, important, essential, critical)
1
central(important, critical, vital, fundamental)
1
chief(adjective, great, big, important)
1
chips are down(expression, idiom, important, historic)
1
considerable(big, important, powerful, substantial)
1
conspicuous(important, powerful, vital, effective)
1
dangerous(severe, serious, vital, grave)
1
desperate(severe, important, serious, critical)
1
dire(severe, important, serious, critical)
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ChicagoSmart Define. 2015. "decisive thesaurus" https://smartdefine.org/decisive/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, decisive thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/decisive/thesaurus/synonyms>.
MLASmart Define. "decisive thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/decisive/thesaurus/synonyms>